docs: def download_file(self, file_path, range=None):
          """
          Download a file from Telegram servers
          """
          headers = {"range": range} if range else None
          url = "{0}/file/bot{1}/{2}".format(API_URL, self.api_token, file_path)
          return self.session.get(
              url, headers=headers, proxy=self.proxy, proxy_auth=self.proxy_auth
          )